Antidepressants synergize with chemotherapy against cancer stem cells

In a recent report [1], the antidepressant drug desmethylclomipramine has shown an interesting synergistic effect with cisplatin, gemcitabine or placlitax on lung cancer stem cells. The fact that antidepressant drugs potentiate chemotherapy in poorly responding cancer is of major relevance, and opens up potential innovative therapeutic effects. But what are the underlying molecular mechanisms for this therapy? Can this be transferred to other poorly responding cancers?